Inclusion of oil viscosity numbers on cans and in the Instruction Book.
| Identifier | ExFiles\Box 145\3\ scan0179 | |
| Date | 20th April 1938 | |
| 1235 D {John DeLooze - Company Secretary} /BP. from Rm. {William Robotham - Chief Engineer} Rm {William Robotham - Chief Engineer} 5/R.20.4.38. With reference to D {John DeLooze - Company Secretary} /BP18/MW.14.4.38, recommendations for Bentley and Rolls-Royce are the same. Oil Manufacturers are now putting the viscosity numbers on the cans, and, therefore, it is unnecessary to mention the advertising brand. Naturally we are arranging with the oil companies to do this before we quote viscosity numbers in the Instruction Book. Rm. {William Robotham - Chief Engineer} | ||
From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).